| Description | Date | Identifier | |
| Telegram confirmation from Joseph Lucas Ltd. regarding P100 headlamps ready for delivery. | 4th Feb 1929 | Box 61a \ 2 scan0025 | |
| Road test report on the specimen 18-EX car, detailing performance, handling, and bodywork feedback after extensive mileage. | 2nd Jun 1929 | Box 61a \ 2 scan0026 | |
| Page of notes discussing improvements to car body design, including the screen, wheel carriers and bonnet. | 1st Feb 1929 | Box 61a \ 2 scan0027 | |
| Improvements to the 'SS' Chassis dynamo output to reduce weight and economize electrical current. | 1st Feb 1929 | Box 61a \ 2 scan0028 | |
| The flexibility of head lamp brackets. | 18th Feb 1929 | Box 61a \ 2 scan0029 | |
| Telegram received by telephone regarding overly flexible headlamp brackets for model 18EX. | 18th Feb 1929 | Box 61a \ 2 scan0030 | |
| Post office telegram concerning the flexibility of headlamp brackets and stays on car 18EX. | 18th Feb 1922 | Box 61a \ 2 scan0031 | |
| Design and stiffness of S.S. Headlamp Brackets and related stays. | 18th Feb 1929 | Box 61a \ 2 scan0032 | |
| From R. discussing the headlamp situation and a preference for a three-lamp scheme. | 28th Feb 1929 | Box 61a \ 2 scan0033 | |
| Preference for a three-lamp headlamp scheme over dipping systems. | 28th Feb 1929 | Box 61a \ 2 scan0034 | |
| The proposed mounting of a hinged number plate and tail lamp for India and SS models. | 26th Feb 1929 | Box 61a \ 2 scan0035 | |
| Parts sent for a 23-EX open body vehicle and instructions for fitting. | 7th Mar 1929 | Box 61a \ 2 scan0036 | |
| The fitting of 4 door pulls supplied by The Carlton Carriage Co. | 7th Mar 1929 | Box 61a \ 2 scan0037 | |
| Recommending the use of frosted glass bulbs in patch instruments. | 26th Mar 1929 | Box 61a \ 2 scan0038 | |
| Letter from The General Electric Co Ltd regarding an order for lamps and their performance. | 27th Mar 1929 | Box 61a \ 2 scan0039 | |
| Letter from Joseph Lucas Limited regarding an experimental order for special twin filament replacement bulbs for P.100 Projectors. | 27th Mar 1929 | Box 61a \ 2 scan0040 | |
| Experimental bulbs for P.100 headlamps. | 28th Mar 1929 | Box 61a \ 2 scan0041 | |
| Request for information on the suitability and performance of Osram double filament headlamp bulbs. | 3rd Apr 1929 | Box 61a \ 2 scan0042 | |
| Reliability and fitment of Lucas dipping reflector headlamps. | 3rd Apr 1929 | Box 61a \ 2 scan0043 | |
| Experimental double filament bulbs for Lucas P.100 headlamps and a potential invoice dispute. | 5th Apr 1929 | Box 61a \ 2 scan0044 | |
| Letter discussing suggestions for dipped beam central lamp mounting and improvements to headlamp diffusion. | 10th Apr 1929 | Box 61a \ 2 scan0045 | |
| Letter discussing developments and feedback on bulbs, a two-way switch, wing lamps, and a screen wiper. | 10th Apr 1929 | Box 61a \ 2 scan0046 | |
| Letter from a supplier discussing the manufacturing of tail lamps and spot lights. | 10th Apr 1929 | Box 61a \ 2 scan0047 | |
| Cover note from ROY to Hs. regarding a communication from Mr. Oliver Lucas about lighting proposals and the dispatch of samples. | 12th Apr 1929 | Box 61a \ 2 scan0048 | |
| Submission of non-dazzle type lamps from a former C.A.V. engineer for inspection and testing. | 19th Apr 1929 | Box 61a \ 2 scan0049 | |
| The process for ordering lamps for chassis to prevent duplication and addressing an issue with obsolete lamp stock. | 1st Apr 1929 | Box 61a \ 2 scan0050 | |
| Follow-up with Messrs. Lucas regarding test results for G.E.C. gasfilled lamp bulbs for P.100 headlamps. | 25th Apr 1929 | Box 61a \ 2 scan0051 | |
| The rejection of Midgley non-dazzle headlamps and arranging for their return. | 25th Apr 1929 | Box 61a \ 2 scan0052 | |
| Instructions for the Midgley Head-Lamp Equipment. | 25th Apr 1929 | Box 61a \ 2 scan0053 | |
| Typed memo regarding correspondence with Messrs Joseph Lucas Ltd. | 30th Apr 1929 | Box 61a \ 2 scan0054 | |
| Letter from Joseph Lucas Ltd. regarding the supply and development of special 'Graves Type' bulbs and alternative P.100 headlamp systems. | 29th Apr 1929 | Box 61a \ 2 scan0055 | |
| Requesting an order be placed with Messrs. Lucas for special Graves type lamp bulbs for P.100 headlamps. | 1st May 1929 | Box 61a \ 2 scan0056 | |
| Clarifying a misunderstanding with Messrs. Phillips regarding a pair of headlamp bulbs. | 1st May 1929 | Box 61a \ 2 scan0057 | |
| Replacing obsolete lamps and fitting new instrument panels for cars 23-EX and 16-G4. | 5th May 1929 | Box 61a \ 2 scan0058 | |
| The improvement of shutter control, considering a thermostatically controlled system for the S.S. model. | 8th May 1929 | Box 61a \ 2 scan0059 | |
| Surplus lamps, instrument panel fitting for specific cars, dial colours, and radiator shutter controls. | 8th May 1929 | Box 61a \ 2 scan0060 | |
| The unsuitability of a dipping headlamp scheme for standard chassis and requesting a new one. | 10th May 1929 | Box 61a \ 2 scan0061 | |
| Sample Lucas Lamp (Type R.160 S.D.) for trial fitting on a Phantom car. | 23th May 1929 | Box 61a \ 2 scan0062 | |
| Standardisation drawings for dipping headlamps on the Phantom model. | 24th May 1929 | Box 61a \ 2 scan0063 | |
| Requesting to view a Lucas Lamp, type R.160.SD, fitted on a car. | 29th May 1929 | Box 61a \ 2 scan0064 | |
| Instructions to change chassis production from 40/50 HP to 20 HP for a 'Staybrite' finish and specifying materials for various components. | 21th Jun 1929 | Box 61a \ 2 scan0065 | |
| Request to order special Graves type bulbs for Lucas P.100 headlamps on experimental cars. | 21th Aug 1929 | Box 61a \ 2 scan0066 | |
| Urgent request to obtain centre contact fittings for Lucas P.100 headlamps from Messrs. Lucas. | 30th Aug 1929 | Box 61a \ 2 scan0067 | |
| Issues with the S.221 tail lamp fouling the luggage carrier on S.S. cars and proposing solutions. | 17th Sep 1929 | Box 61a \ 2 scan0068 | |
| Letter to Lucas Electrical Co. Ltd. complaining about three mechanical faults with their P.100 headlamps and requesting improvements. | 23th Oct 1929 | Box 61a \ 2 scan0069 | |
| Letter from Joseph Lucas Limited concerning P.100 Head Lamps being returned for repair. | 25th Oct 1929 | Box 61a \ 2 scan0070 | |
| Follow-up letter to Messrs. Lucas Electrical Co. Ltd. regarding a previously acknowledged inquiry. | 18th Nov 1929 | Box 61a \ 2 scan0071 | |
| Requesting the return of P.100 headlamps taken off car 22-EX to address mechanical issues with the makers. | 9th Dec 1929 | Box 61a \ 2 scan0072 | |
| Incorrect type of P100 headlamps received for chassis 22EX. | 12th Dec 1929 | Box 61a \ 2 scan0073 | |
| Letter to Joseph Lucas Ltd. chasing a response regarding defective headlamps and unsuitable replacements. | 19th Dec 1929 | Box 61a \ 2 scan0074 | |
| Letter from Joseph Lucas Limited regarding a misunderstanding about P.100 Headlamps. | 20th Dec 1929 | Box 61a \ 2 scan0075 | |
| Letter to supplier Joseph Lucas Ltd. regarding the experimentation on and return of headlamps. | 27th Dec 1929 | Box 61a \ 2 scan0076 | |
| Return of a pair of P.100DB headlamps, switch, and junction box to Messrs. Joseph Lucas Ltd. | 27th Dec 1929 | Box 61a \ 2 scan0077 | |
| Letter to Joseph Lucas Ltd. requesting a pair of suitable headlamp fittings for an experimental car. | 2nd Jan 1930 | Box 61a \ 2 scan0078 | |
| Adopting the centre third lamp scheme for headlamp dimming on experimental cars. | 3rd Jan 1920 | Box 61a \ 2 scan0079 | |
| Requesting parts to convert a car's lighting from double to single filament bulbs for a 10,000-mile test. | 6th Jan 1930 | Box 61a \ 2 scan0080 | |
| Ordering of various lamps and foot switches for experimental cars. | 6th Jan 1930 | Box 61a \ 2 scan0081 | |
| Headlamp modifications on experimental cars and a planned visit from Messrs. Lucas. | 10th Jan 1930 | Box 61a \ 2 scan0082 | |
| Letter to Joseph Lucas Ltd. regarding headlamps, a third lamp for two-way switching, and an improved two-way switch. | 16th Jan 1930 | Box 61a \ 2 scan0083 | |
| Insufficient stiffness of a Phantom II centre lamp bracket after testing. | 31th Jan 1930 | Box 61a \ 2 scan0084 | |
| Letter from Joseph Lucas Limited regarding the modification of P.100 Head Lamps and the supply of replacement Junction Boxes. | 31th Jan 1930 | Box 61a \ 2 scan0085 | |
| Follow-up memo regarding a disputed invoice and credit for lamps from Joseph Lucas Ltd. | 11th Feb 1930 | Box 61a \ 2 scan0086 | |
| Dispute over being charged for replacement lamps from supplier Messrs. Lucas. | 3rd Feb 1930 | Box 61a \ 2 scan0087 | |
| Letter to Joseph Lucas Ltd. regarding the return of head lamp junction boxes. | 17th Feb 1930 | Box 61a \ 2 scan0088 | |
| Instructing the despatch of head lamp junction boxes to Joseph Lucas Ltd. | 18th Feb 1930 | Box 61a \ 2 scan0089 | |
| Letter from Joseph Lucas Limited regarding the return of double pole junction boxes for P.100 Headlamps. | 19th Feb 1930 | Box 61a \ 2 scan0090 | |
| Stop lamp bracket for the Phantom II vehicle. | 30th Apr 1930 | Box 61a \ 2 scan0091 | |
| Design and fitting strategy for Butler Stop Lamp brackets. | 5th May 1930 | Box 61a \ 2 scan0092 | |
| Tests of completed cars, with recommendations for P.2 headlamp wiring and bracket bolts. | 26th Jun 1930 | Box 61a \ 2 scan0093 | |
| Tests of completed cars, discussing headlamp wiring configurations, junction boxes, and headlamp bracket bolt adjustments. | 5th Jul 1930 | Box 61a \ 2 scan0094 | |
| Letter to Joseph Lucas Ltd. comparing their P.100 headlamp with an American C.M. Hall lamp. | 15th Jul 1930 | Box 61a \ 2 scan0095 | |
| Letter to Joseph Lucas Ltd. comparing the design of Hall and Lucas headlamps. | 15th Jul 1930 | Box 61a \ 2 scan0096 | |
| Extract from C.W. Hancock's report on vehicle 24-EX at 6,000 miles, detailing issues with the lamps. | 20th Jul 1930 | Box 61a \ 2 scan0097 | |
| Letter from Joseph Lucas Limited regarding the 'Depress Beam Headlamp' and improvements to the P.100 lamp to prevent reflector discoloration. | 23th Jul 1930 | Box 61a \ 2 scan0098 | |
| Page 2 of a letter from Joseph Lucas Ltd. to E. Fowler Clark. | 23th Jul 1930 | Box 61a \ 2 scan0099 | |
| Despatch of a Lucas R 160 S lamp to Kings Cross for Major Cox. | 27th Aug 1929 | Box 61a \ 2 scan0100 | |
| Extract from G.W. Hancock's report on headlamp and spot lamp performance on car 24-EX after 10,000 miles. | 15th Aug 1930 | Box 61a \ 2 scan0101 | |
| Comparing the current consumption of Lucas headlamps with Stephen Grebel or Marchel lamps. | 23th Sep 1930 | Box 61a \ 2 scan0102 | |
| Requesting a set of new Marchel headlamps for testing, and comparing them to existing Lucas, French, and German lamps. | 26th Sep 1930 | Box 61a \ 2 scan0103 | |
| Effectiveness of Lucas versus French Marchal headlamps, particularly in light of a new French law. | 2nd Oct 1930 | Box 61a \ 2 scan0104 | |
| Various schemes for fitting a combined reverse, stop, and tail lamp to different car rear end types. | 12th Mar 1930 | Box 61a \ 2 scan0105 | |
| Use of a Bosch foot-operated dimming switch for left-hand drive chassis. | 10th Jan 1931 | Box 61a \ 2 scan0106 | |
| The specification of a Bosch foot-operated dimming switch for an L.H. Chassis. | 12th Jan 1931 | Box 61a \ 2 scan0107 | |
| Importing a Bosch switch to the U.S. for a dimming light on a left-hand drive chassis. | 13th Jan 1931 | Box 61a \ 2 scan0108 | |
| Copy of a letter concerning a complaint about poor, yellowish light from Lucas lamps, found to be caused by insufficient wiring. | 6th Feb 1931 | Box 61a \ 2 scan0109 | |
| Suspected wiring error causing voltage loss and a request for tests on headlamps. | 10th Feb 1931 | Box 61a \ 2 scan0110 | |
| Comparative review of proposed cheaper Lucas headlamps against existing models for an L.H. chassis. | 8th Feb 1931 | Box 61a \ 2 scan0111 | |
| Note detailing the procedure for adjusting a lamp by loosening a screw. | 21th Feb 1931 | Box 61a \ 2 scan0112 | |
| Meeting with Lucas to discuss headlamps and their legality for U.S.A. L.H. chassis. | 21th Feb 1931 | Box 61a \ 2 scan0113 | |
| Tests on the loss of Potential Difference (P.D.) in headlamp wiring on experimental cars. | 3rd Mar 1931 | Box 61a \ 2 scan0114 | |
| Analysis of voltage drop in headlamp wiring circuits for different chassis models and wiring configurations. | 1st Mar 1931 | Box 61a \ 2 scan0115 | |
| Electrical wiring and changeover switch design for headlamps to accommodate increased power demands. | 1st Mar 1931 | Box 61a \ 2 scan0116 | |
| Negotiations for the supply of Lucas Lamps for use in the States. | 15th May 1931 | Box 61a \ 2 scan0117 | |
| Letter regarding the non-compliance of Lucas lamps with Massachusetts motor vehicle regulations and the prohibitive cost of nationwide approval. | 1st May 1931 | Box 61a \ 2 scan0118 | |
| Approval of headlamps to comply with French anti-dazzle regulations. | 1st Jun 1931 | Box 61a \ 2 scan0119 | |
| Investigation into voltage loss in the headlamp wires of a Phantom II vehicle. | 17th Sep 1931 | Box 61a \ 2 scan0120 | |
| Provision of a foot-operated dipping switch for the 25 HP model as an alternative to the instrument board-fitted Lucas switch. | 13th Nov 1931 | Box 61a \ 2 scan0121 | |
| Upcoming changes in headlamp dimming regulations and their potential impact on existing lamp systems. | 6th Jan 1932 | Box 61a \ 2 scan0122 | |
| Inquiry to the Royal Automobile Club regarding proposed legal regulations for headlamps. | 6th Jan 1932 | Box 61a \ 2 scan0123 | |
| Letter from the Royal Automobile Club regarding proposed anti-dazzle regulations. | 7th Jan 1932 | Box 61a \ 2 scan0124 | |
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